Emerson 250-400kVA Attempt to manually close the disconnect by

			UPS Alarm and Status Messages
Table 7	Liebert NXL alarm and status messages (continued)
Event Message		Event Definition	Recommended Action
		An active Input Current Limit alarm means the	Press “SILENCE” to silence the audible alarm.
		detected input current (RMS) exceeds the limit
		setpoint (default is 125%). This may be normal	Observe the meters on the One-Line Display for
		depending on various operating conditions, such	input voltage level, battery charge/discharge
Input Current Limit		as input voltage level, output load level, and	current, and output load percentage kW. Investigate
		whether the batteries have recently discharged.	any abnormal readings.
		This alarm is self-clearing. When the condition is	If the reason for the alarm cannot be determined,
		no longer present, the alarm and any control	contact your factory-authorized service provider.
		activity tied to the alarm reverts to normal.
Input Disconnect		The rectifier disconnect device indicates that it is
(Q1) Open		in the open position.
Input Disconnect		The externally mounted input isolator indicates
(Q11) Open		that it is in the open position.
		The Input Filter Disconnect is locked open.
		The Input Filter Disconnect Cycle counter has	Press “SILENCE” to silence the audible alarm.
		exceeded the setpoint. The Input Filter
		Disconnect opens automatically as determined by	Attempt to manually close the disconnect by
		the disconnect settings, or because of an unusual	pressing “Startup,” “Device Control,” “Close Trap.”
Input Filter Cycle		condition.	If the condition which caused the filter disconnect to
		An example of a setting would be to automatically	lock open is still present, it re-opens.
		open the filter disconnect under light load	If the disconnect cannot be manually closed or the
		conditions to improve the input power factor. An	alarm cannot be cleared, contact your factory-
		example of an unusual condition would be	authorized service provider.
		unbalanced currents on the input, possibly
		because of a suspect component in the filter itself.
		This summary alarm means there is a problem	Press “SILENCE” to silence the audible alarm.
		with input power. It is not acceptable to the
		Rectifier.	Examine the One-Line Display. The Rectifier input
Input Not Avail		If the unit is running normally when this event	line feeding the Input Breaker should be green. If
		occurs, the UPS goes to battery.	not, investigate source power to the UPS.
		This alarm is self-clearing. When the condition is	If input power is good, and this alarm is active,
		no longer present, the alarm and any control	contact your factory-authorized service provider.
		activity tied to the alarm reverts to normal.
		This is a summary event caused by an
		interruption in communication between the
		controls and a device on the Controller Area
		Network (CAN).	Press “SILENCE” to silence the audible alarm.
		The Internal Communication Error event indicates
Internal Comm			Press “RESET” to clear the alarm.
		a loss of communications between the controls	If the alarm cannot be reset, or if the alarm condition
Error		and an external device.
			returns, contact your factory-authorized service
		The Internal Communication Error is displayed
			provider.
		when the controls detect a loss of communication
		to a device on the Controller Area Network (CAN).
		An infrequent occurrence that resets immediately
		is probably not serious.
		An overload condition is active on A phase.	Press “SILENCE” to silence the audible alarm.
		A phase load condition exceeds 105%.
			Check the Module Output Meter and note the A
		A countdown timer is displayed on the One-Line
			phase load percentage.
		Display in response to this alarm, and indicates
			If possible, reduce A phase loading.
		the time remaining until a transfer to bypass
			If the steady state load remains above 105%, allow
Inv Overload Ph A		occurs. The length of time remaining until transfer
			the UPS to transfer to bypass and contact your
		is directly proportional to the severity of the	factory-authorized service provider.
		overload.
			If the displayed load percentage is less than 100%
		This alarm is self-clearing. When the condition is
			and the alarm is still active, contact your factory-
		no longer present, the alarm and any control
			authorized service provider.
		activity tied to the alarm reverts to normal.

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